title: "Seamless" graphene interconnects for the prospect of all-carbon spin-polarized field-effect transistors.
abstract: Magnetism in graphene nanofragments arises from the spin polarization of the edge-states; consequently, as the material inexorably shrinks, magnetism will become a dominant feature whereas the bulk carrier mobility will be less relevant. We have carried out an ab initio study of the role of graphene-ultra-nanofragment magnetism on electronic transport. We present, as a proof-of-concept, a nanoscopic spin-polarized field-effect transistor (FET) with the channel and metallic contacts carved from a single graphene sheet. We demonstrate the selective tuning of conductance through electric-field control of the magnetic, rather than the charge, degrees of freedom of the channel, the latter typically employed in microscopic graphene FETs.
authors.affiliation: Department of Physics and W. M. Keck Computational Materials Theory Center, California State University Northridge, Northridge, CA 91330, USA.
authors.forename: Luis A
authors.initials: LA
authors.lastname: Agapito
authors.forename: Nicholas
authors.initials: N
authors.lastname: Kioussis